Gaya APA

, ., BEGLE, E, G. (1970). MATHEMATICS EDUCATION: The Sixty-ninth Yearbook of the National Society for the Study of Education . The National Society for the S: The National Society for the Study of Education, 1970.

Gaya MLA

, ., BEGLE, Edward, G.. "MATHEMATICS EDUCATION: The Sixty-ninth Yearbook of the National Society for the Study of Education". The National Society for the S: The National Society for the Study of Education, 1970, 1970. .